VBR in Avi files.

Stranger Than Fiction

So I want to cut certain ... uh ... parts from longer ... movies. Most of the movies I have are in VBR and virtual dub tells me the audio/video sync will be off by x amount unless I "decompress the ENTIRE audio stream and recompress at a constant bitrate." I've been doing that for a while but I'm kinda sick of it. Even on my 3.4 ghz cpu it takes around 2-4 hours depending on how high the video bitrate is. What I'm wondering is if there is an easier way to convert VBR to CBR and maintain the audio/video sync?

OSNN Senior Addict

that warning is talking about the audio only, not the video! audio encoding should take no more than 20 min. please don't tell me you've been encoding CBR video, which horribly degrades quality!

anyway vdub does not handle vbr audio (although the latest has limited vbr support). use virtualdubmod instead, you will not have to reencode anything, just click "no" when it gives you the warning, it'll turn out fine

OSNN Senior Addict

Stranger Than Fiction

What I did this time is set the video to direct stream copy and set the audio to full processing mode and then I set it to recompress the audio using Lame @ 192 and looks like it worked. Took about 20 minutes like you said and I didn't have to redo the video. Awesome, many thanks!

OSNN Senior Addict

OSNN One Post Wonder

anyway vdub does not handle vbr audio (although the latest has limited vbr support). use virtualdubmod instead, you will not have to reencode anything, just click "no" when it gives you the warning, it'll turn out fine

This was some excellent advice when I tried to cut a segment out of a video with vbr audio, first time around I clicked "yes" when it asked for some reason (I'm not handy with anything that comes to video editing), but then I did as suggesten and clicked "no" when it asked and the audio was in perfect sync with the video. I am using VirtualDubMod, which is in itself just excellent. Thanks!

Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS